Additional file 2 of Preoperative black line sign predicts progressive kyphosis after percutaneous kyphoplasty in osteoporotic vertebral compression fractures

Supplementary material 2: Supplementary Figure 2. Correlations between KA parameters and clinical outcomes at 1 year after PKP.Scatterplot showing the relationship between the KA at 1 year and VAS scores in the NBLS and BLS groups.Scatterplot illustrating the correlation between KA difference at 1 year and VAS scores.Scatterplot showing the association between KA at 1 year and ODI scores.Scatterplot demonstrating the relationship between KA difference at 1 year and ODI scores. Each dot represents an individual vertebra. Linear trend lines with 95% confidence bands are presented for visualization. Spearman correlation coefficientsand corresponding P values are shown within each panel. Across all analyses, the correlations were weak in magnitude, indicating that kyphotic deformity and its progression had only a limited impact on pain and functional outcomes at 1 year. KA: Kyphotic angle